Orrery, tellurion, and the like.



W. WILSON.

ORRERY, TELLURION, AND THE LIKE.

APPLICATION FILED MAY I5, 1917.. 1,256,55. Patented Feb.19,1918.

W. WILSON.

ORRERY, TEL-LURION, AND THE LIKE.

APPLICATION FILED MAY I5, I91?- Patented Feb. 19, 1918.

5 SHEETS-SHEET 2.

minimum r mmlquin w. WILSON. r

ORRERY, TELLURION, AND THE LIKE.

Patented Feb.19,1918.

5 SHEETS-SHEET 3.

APPLICATION FILED MAY 15, I917- W. WILSON.

ORRERY, TELLURION, AND THE LIKE.

APPLICATION FILED MAYI5. 1917.

1,256,855. Patented Feb.19,1918.

' 5 SHEETS-SHEET 4.

W. WILSON. ORRERY, IELLURION, AND THE LIKE.

Patented Eeb.19,1918.

5 SHEETS-SHEET 5- APPLICATION FILED MAY l5, 1-917. 1,256,855.

WILLIAM WILSON, or Lennon, ENGLAND.

OREERY, TELLURION, AND THE LIKE.

Specification of Letters Patent. Patented Feb. 19, 1918.

Application filed May 15, 1917. Serial No. 168,832.

To all whom it may concern: 7

Be it known that l, WILLIAM WILSON, a subject the King of England; residing in London, England, have invented certain new and useful Improvements in Orreries, Tellurions, and the like, of which the follow ing is a specification.

The purpose of the present invention is the construction of a tcllurion which while suitable for lecture purposes and correctly designed from a scientific point of view has the following special advantages The motions of revolution and rotation of the sun, earth and moon are obtained through the action of cords and pulleys instead of the complicated and costly combinations of spur-wheels, bevel-gearing and the like which have been used in some of the tcllurions previously proposed.

Any possible irregularity in action through the slackness or over-tension of the driving cords is prevented by the arrangement of a tension regulator for each cord.

The initial motion for actuation of the device is obtained by the pressure of the hand on the tail piece of the horizontal bar hereinafter described and from this motion all the other movements are automatically obtained.

In the accompanying drawings- Figure l is a side elevation of a tellurion constructed according to the present invention:

' is a vionof a portion ,of Fig. l, section in the plane of said Fig. 1;

r 3 is asectioncl elevation of a part of Fig. 1 by which the lllOOll-ll1filGl is caused to rise and fall;

5 and G are cross-sections on the and 66 respectively of Figs. 7 and S are views at right-angles to one another of a rocking-lever hereinafter referred to;

9 is a section to a scale larger than that of Fig. 1, of the lower portion of the supporting base hereinafter referred to, and of the parts immediately above it;

Fig. 10 is a plan of a driving-wheel constituted by a series of swan-necks A hereinafter referred to situated below the'said supporting base and hereinafter particularly described; v

Fig. 11 is a section of a sun-supporting and driving device forming part of the ap paratus that is shown in Fig. l and Fig. 12 is a perspective view of an expansible wheel of the kind that is employed in Fig. 1.

Like reference letters indicate like parts throughout the drawings.

lVith reference to the drawings A vertical shaft C supporting at its upper end a sun globe S is rigidly fixed at its lower end into a substantial base, constituted by the parts B and B Rigidly fixed to this shaft are four driving wheels lettered D, E, G and H respectively by means of which the required motions are transmitted to the various parts of the apparatus. These four driving-wheels, from below upward are as follows The wheel D is the Pole-Star wheel concerned with the maintenance of the constant direction of the earths inclined axis.

The wheel E is the Saros wheel concerned with the slow revolution of the moons nodes constituting the Saros cycle.

The wheel G is the moon-revolution wheel, whereby the moon in the tellurion is made to travel around the earth.

The Wheel H is the sun-rotation wheel, for rotating the sun on the solar axis.

A main horizontal tubular bar is made up of the parts F F F pivoted on the shaft C This moves freely in a horizontal plane around the vertical shaft C as a center and projecting in both directions terminates at one end in a balance weight BVV which serves also as a handle and at the other end in a T piece J supporting themechanism concerned with the position and motions of the earth M and moon 0 The earths vertical support consists of a triple concentric tubular spindle supported in a vertical position in the tubular bracket or T-piece J, and in its turn supporting the earth and moon ecliptic and orbital rings and mechanisms connected therewith. Its construction and its relationships are as follows: The innermost tube M of this triple tubular spindle is freely rotatable within an intenmediate tube L and an outermost tube K and is supported in position by a fixed collar or shoulder M on it by which it rests on the top of the tube L and projects above that encircling tube and thus affords means of attachment for the angle bracket M supporting the earth M on its inclined axis. It projects below its encircling tube and thus affords means of attachment for a pulley Pole Sta-r pulley M?, connected by an endless driving-cord I with the driving wheel Pole Star wheel D on the vertical shaft G which drives the Pole Star pulley when the latter is moved by the bar F 'F F in relation to the shaft C tween this driving wheel 1) and pulley M is such that when the bar F F F is made 7 to revolve about the shaft C the earths axis maintains a constant direction in space, 6. g. toan imaginary pole star. Similarly the intermediate movable tube L of the aforesaid triple tubular spindle is freely rotatable within its encircling tube K upon operation of the bar F F F and is supported in position by a collar or shoulder L which is fixed on the tube L and by which it rests on the top of the sleeve K, which latter forms a virtual upward extension of the T-piece J and is stationary on the latter. The tube L projects above its encircling tube K and thus affords means of attachment for two structures concerned in the slow revolution of the moons nodes. 7

One of the structures is an inclined disk or cam L supporting a rocking lever P l causing the moon O in its monthly revolution successively to rise above and fall below the ecliptic. v

The other structure is a horizontal bar L and vertical rods L supporting a ring L surrounding the earth but at some distance from it, and in a plane oblique to the ecliptie, and supporting also a ring L somewhat smaller and in the plane of the ecliptic; thus the one ring L represents the plane of the moons orbit, and together the rings L L indicate the situation of the moons nodes.

The aforesaid tubeL projectsbelow its encircling sleeve K and thus affords means of attachment for a pulley, the Sarospulley L connected by an endless cord 2 with the driving wheel Saros wheel E on the vertical shaft C The ratio between this driving wheel E and corresponding pulley L is such that when the bar Fl =13 2 F is made to revolve a slow revolution of the moons nodes is seen to occur corresponding to a complete revolution in 18years'1'1 days or the period known as the cycleof Saros.

Inadditio'n to the tw above-mentioned stru'ctures'L L whi ch are rigidly attached by set screws to the upward prolongation of the rotatabletubular spindle lwa'ndthus move withitythereis situated between'the said structures third structure; the ro'ckin V lever P resting by wheel s' Vi on'the sur face of the inclined cam d sk L This rock F in g-lever unlike its 1 adj acent structures is not fixed to the i tubular spindle L by which it is centered but is capable of any rotatorymotion around that spindle which may be imparted to-it. Such rotatory motion is im-' p'ar ted'to 1t b'y the vertical m'oon'spindle O v'vlrich' is' embraced "the forked termination? B of 'then-rockinglever; and thus the The ratio bemonthly revolution of the m oon necessitates orbit and that diameter of the inclined disk which is horizontal corresponds to the nodal line of the moons orbit and may be called the disks nodal line. When the rockin lever wheels rest on this line the rockingleveris horizontal and the moon is in the plane of the ecliptic, in other .words at its nodes; when the wheels VF rest on any other points of the disk above or below its nodal line the moon occupies the corresponding position above or below the ecliptic, as will hereinafter appear. As the inclined disk L is fixed to its supporting spindle L it slowly rotates with it, completing one revolution in a period corresponding to 18 years 11 days, and as it rotates its nodal line necessarily rotates and consequently the nodal line of the moons orbit also; in other words, the slow revolution of the'moon s nodes takes place.

The third and outermost tube Y of this aforesaid triple tubular spindle turns about the fixed sleeve K and is upborne by the top end of the T-piece J. It carries a pulley cap to be referred to subsequently herein.

The-ratiobetween the last-named driving a concurrent monthly revolution of the rockwheel-"G and corresponding pullev-K is V such that when the horizontal bar-of the an paratus is made-to revolve there occur. 13.39 complete revolutions of the" moon around the earth, or "12.39. lunations occur during the yearly revolution of the earth around the sun; andnlso that. 223 lunations occur'd'uring-the 'Saroscvcle of '18 years 11: day-s and 235 lunatrons occur durmg thenietonie cycle'of'19 years.

By the mechanisms above referredto-the following motions and positions are :con-

currently obtained." I

1. Constant directionof: the earths axis;

2. Monthly revolution of the moon around the earth, in a plane oblique to the ecliptic.

3. The slow revolution of t 1e moons nodes.

In addition to the mechanism just rcferrcd to for obtaining the moons revolution in a plane oblique to the ecliptic, special means are employed so as to demonstrate the following additional motions of the moon:'

1. The monthly rotation of the moon on its axis.

2. The revolution of the shadowed half of the moon so as to maintain-a constant direction away from the sun.

3. The successive phases of the moon.

4. The production of solar eclipses total, partial and annular.

The moons monthly rotation on its axis is efiected because it is non-rotatable in relation to the spindle O and bar N; this may be brought about by the following means The moons steel spindle O as regards its upper half has one side flattened so that its section is angular, e. 9., semi-circular instead of circular. be central circular bore (lined by a tube) passing through the moon and by which it is guided as it slides up and down on the spindle is similarly altered in cross-section at one part of its length, say by the insertion of a piece of metal so that while freely movable in the vertical direction all rotatory motion relatively to its rigid spindle is prevented. The spindle being rigidly fixed as hereinbefore stated it necessarily has the same side always toward the earth and consequently the same condition obtains in the case of the moon itself, and this condition implies one rotation on its axis in the course of its one revolution around the earth.

The revolution of the darkened side of the moon so as to maintain it in a constant direction away from the sun will next be described. In some tellurions wherein a rocking-lever is employed, the rocking-lever ends in an upward-curving bar reaching to the level of the ecliptic, and to its extremity is rigidly attached the moon globe. range'ment permits of the moons revolution in the plane oblique to the ecliptic and also permits of the moon presenting the same side constantly to the earth but such an arrangement is incapable of representing the revolution ofthe moons dark side in its constant direction away fro a the sun and consequently the phases of the moon cannot be represented automatically nor would it be possible by the addition to this known device of any conical attachment such as is hereinafter described. to represent the various forms of solar eclipses. In the tellurion of the present invention herein described all these can be represented by the employment of the following means: The dark side of This arthe moon is represented by hemispherical cap O painted black applied to the surface of the moon but free move around it without actually touching it. Tt is supported in such a way that while free to move up and down with the moon it is capable of an independent rotatory motion around the moon and the motion thus conveyed to it is such that it constantly maintains direction away from the sun. This is effected by the following means:The rigid moon spindle is surrounded as to its lower half by a freely rotatable tube 0 having at its lower end a flange resting on a pulley O rotatable around the base of the spindle 0 The flange 0 and'pulley are engaged with one another. The pulley is connected by a driving cord 4 with a similar-sized pulley K rigidly fixed to the upper end of the sleeve K previously described. Outside the tube 0 loosely encircling the moons rigid spindle is a short tube 0 free to move up and down and fitted with two flanges O and (V between which it e1n braced by the fork P of the rockingdever. By means of a fine round. bar this movable short tube 0 is rigidly connected with a second short tube 0 on which the moon rests a-nd'to which the hemispherical mooncap 0 is attached by aloose collar engaging a tail-piece G on the cap and held by a set-screw 0 Thus the upward and downward motion conveyed by the rockinglever P 1 to the short-tube is thence transmitted tothe hemispherical moon-cap O and to the moon O while at the same time the requisite rotatory motion in relation to the spindle O is conveyed to the hemispherical cap alone, by means of the bar 0 actuated by the pulley and tube 0 immediately surrounding the rigid moonspindle. The rotatory motion of the abovementioned pulley O and tube O is transmitted to the moon-cap through the medium of a flange 0 on the upper end f the tube 05 in which is filed a slot receiving the red O which as before described connects to- I gether the lower and upper portions of the moon support O and 0". By this combination of mechanism the hemispherical moon-cap (representing the dark side of the moon) has transmitted to it an up and down motion due to its connection with the rocking-lever and also a rotatory motion around the moon due to its connection with the re volving tube surrounding the moons rigid spindle 0 The above-described mechanism, causing the dark side of the moon to maintain a constant direction away from the sun supplies all the conditions necessary for demonstrat ing the various phases of the moon as observed from the earth.

As to eclipses :-An aluminium truncated cone representing the conical shadow of the on the angle-bracket M moon cast into space can be attached to the convex surface of the hemispherical mooncap 0 or substituted therefor as indicated by the chain-lines AT, Fig. 3, and thus partaking of the motion of the cap it is always directed away from the sun and at certain times in the year the tail-end of this shadow- Under the central base of the apparatus is a thin steel foundation-plate A supporting the Whole apparatus through the intervention of leveling-screws such as B Connected with the steel foundation-plate are 12 radiating bars A turned up at their outer ends as at A These 12 vertical terminals or swan-necks A practically constitute a large wheel, see Fig. 10. An endless band of cord 5 is employed the greater part of which encircles the 12 swan neck terminals A, the remaining portion passes thence into the lower end of, and up the central tube M supporting the earth M and emerges at the top as a loop of cord. In this upper loop is the upper member M of the earths-rotation duplex auxiliary pulley M M mounted Thus this driving-bandh encircles at one end the ringof swan-neck terminals and at its other end the earths-rotation auxiliary pulley l 7 M while the intermediate portion is contained in the central vertical tube A. It thus constitutes a driving belt connecting together a large driving wheel composed of the circle of swan-neck terminals A and the lower member l 7 of the small driven auxiliary pulley 1/ 7 M M which in turn communicates its motion to the earths-rotation pulley by the upper member M of the auxiliary pulley M M M which is geared by. a short endless band 6 to a pinion M integral with a long sleeve connected .with the earth M the piniomthe sleeve and the earthfbeing all rotatable about the inclined shaft M by which the earth is carried, and which is secured to the arm l If the apparatus remains stationary and the cord 5 be made to slide around the circle of swan-necks A rotatory motion would be conveyed. to the earth. Similarly if the cord 5 were held sta tionary and the apparatus made to revolve the same rotatory motion would be conveyed to the earth. The cord can be permanently secured to one of the swan-necks or temporarily fixed by the pressure of the finger and thus the initial movement by the diately above the moon-revolution drivingwheel G is situated the sun-rotation driving wheel H which by means of endless driving bands 7 and 8 conveys the requisite rotatory motion to the sun-rotation pulley H running loosely on the central vertical shaft C and situated immediately above the sun-rotation driving wheel H. Motion of the sun rotation driving pulley H is obtained from the sun-rotation driving-wheel H through the intervention of a pair of united auxiliary pulleys H .and H attached to a common tubular support running on a vertical spindle H rising from the tail piece F of the hori zontal bar F F F and the ratio between the driving-wheel H and pulley H together with the ratio between the two united pulleys H H is such that the sun makes one rotation on its own axis in 26 days, or about 14 rotations in the year. r

The rotatory motion of the suns-rotation pulley H is conveyed to the sun S on its inclined axis I' (see Fig. 11) by the intervention of a tubular sun-driving sleeve 1* rotatable freely 011 the vertical shaft- C The sleeve I interlocks with the flange of the sun-rotation pulley by means of a pin 79 (see Fig. 9) and hole. A shaft'I bent at its upper portion I to the required angle to constitute the suns inclined axis is inserted into the shaft C and is secured V thereto by a key and slot connection such that the suns inclined axis points in the right direction.

The rotatory motion of the sun S is effected by a vertical pin 1 in theflange of the tube I fitting loosely near the suns south pole into a slot in the flange of an .axial tube I" in the sun. As the suns inclined axis at thesouth pole is'in the central line of the suns support it follows thatthe actual center of the sun is a slight distance from the central'line and thus without any attempt to make the earth revolve in an elliptical orbit an important point is 1 gained namely, that the sun does actually occupy a position eccentric to the earths orbit, the earth being thus nearer to the sun at one time of the year than at another and thus demonstrating the periods of the year when the earth is at its perihelion and aphelion respectively.

VVhere important motions or combinations of motions render great accuracy es sential this is attainable by the employment of driving-wheels G and E capable of expansion. The method adopted in the con struction of these expansion wheels, is as follows, and is described with reference to the wheel of Fig. l illustrated separately in perspective in Fig. 12, it being understood that the wheel E is substantially similar and that neither wheel is of itself of the present invention :The wheel is divided through the center into two semi-circular portions 9* g hinged together at one end of the dividing line by the pin 9 and opening out at the other end. This gap can be increased or diminished by the action of an adjustment screw 9 The wheel is mounted between two plates g 9' one half g of the wheel being permanently secured to these plates while the other half g is freely movable between them and after adjustment can be tightened or loosened by the turn of winged nuts and bolts 9 passing through corresponding holes in the plates and through slots in the adjustable half of the wheel which permit of the requisite mobility while the halves are being adjusted and perfect immobility after adjust ment has been effected. Great accuracy in results is thus obtainable, illustrated by the following figures. The Saros driving wheel E can be so adjusted that an error of not more than one day occurs in the whole Saros cycle of 18 years 11 days or an error of one in 6,584. The moon-revolution driving-wheel G can be so adjusted that the number of lunations in the Saros cycle is 29'3T th, instead of 223, and it is only a matter of still more careful adjustment to obtain still more accurate results.

To regulate the tension of the various endless bands 1, 2, 3, 4 and 8 jockey pulleys Q Q H N carried on the parts F H and N respectively are applied to them in a manner well understood and not of itself of this invention.

What I claim as my invention and desire to secure by Letters Patent is 1. In a tellurion, the combination of a base, a vertical shaft fixed in and extending upwardly from the base, a plurality of stationary wheels secured on the aforesaid vertical shaft and co-axial therewith, a horizontal bar pivoted to the aforesaid vertical shaft and movable about it in the horizontal plane, three concentric spindles, innermost, intermediate and outermost, together constituting a triple spindle and borne on one arm of the horizontal bar perpendicularly thereto and each rotatable independently of its companion about their common axis, three pulleys one secured to each of said three spindles, three endless bands constituting each an operative connection between a pulley on one of the said concentrio spindles and a corresponding stationary wheel in the aforesaid plurality, an earthmodel borne on the top of the innermost spindle, a cam-fixed aslant upon the intermediate spindle, a moon-model bored axially, a spindle which at its upper end en- 1 gages the moon-model and prevents relative rotation between it and the said spindle and at its lower end is operatively connected to the outermost of the three concentric spindles aforesaid to turn therewith but not relatively thereto, an operative connection between the aforesaid cam and the moonmodel to raise and lower that model by moving it along the spindle of angular cross-section, a rocking lever which is pivoted to a sleeve loosely encircling the aforesaid intermediate spindle, is engaged with the aforesaid cam and is in operative connection with the moon-model to raise and lower that model by moving it along the spindle of angular cross-section and to be moved by the same spindle around the axis of the intermediate spindle.

2. In a tellurion, the combination of a base, a vertical shaft fixed in and extending upwardly from the base, a plurality of stationary wheels secured onthe aforesaid vertical shaft and co-axial therewith, a horizontal bar pivoted to the aforesaid vertical shaft and movable about in it the horizontal plane, three concentric spindles, innermost intermediate and outermost, together constituting a triple spindle and borne on one arm of the horizontal bar perpendicularly thereto and each rotatable independently of its companion about their common axis, three pulleys one secured to each of said three spindles, three endless bands constituting each an operative connection between a pulley on one of the said concentric spindles and a corresponding stationary wheel in the aforesaid plurality, an earth model borne on the top of the innermost spindle, a cam fixed aslant upon the intermediate spindle,'a moon-model bored axially, a spindle which at its upper end engages the moon-model and prevents relative rotation between it and the said spindle and at its lower end is operatively connected to the outermost of the three concentric spindles, aforesaid to turn therewith but not relatively thereto, an operative connection between the aforesaid cam and the mooir model to raise and lower that model by mov ing it along the spindle of angular cross:- section, a rocking lever which is pivoted to a sleeve loosely encircling the aforesaid intermediate spindle, is engaged with the aforesaid cam and is in operative connection with the moon-model spindle of angular cross-section to be moved by that spindle around the axis of the innermost spindle, a shadow-cap engaging one side of the moon-model, a rotatable driving-sleeve encircling the lower portion of the spindle by which as aforesaid the angular bore of the moon-model is engaged, two pulleys one fixed to the said driving-sleeve the other fixed to the horizontal bar aforesaid, and

tical shaft and co-axial therewith, a horizontal bar pivoted to the aforesaid vertical shaft and movable about it in the horizontal plane, three concentric tubular spindles,

innermost intermediate and outermost, together constituting a triple spindle and borne on one arm of the horizontal bar perpendicularly thereto and each rotatable independently of its companion about their common axis, three pulleys one secured to each of said three spindles, three endless bands constituting each an operative connection between a pulley on one of the said concentric spindles and a corresponding stationary wheel in the aforesaid plurality, an earth-model borne on the top of the innermost spindle, a cam fixed aslant upon the intermediate spindle, a moon-model bored axially, a spindle which at its upper end engages the moon-model and prevents relative rotation between it and the said spindle and at its lower end is operatively connected to the outermost of the three concentric tubular spindles aforesaid to turn therewith but not relatively thereto, an operative connection between the aforesaid cam and the moon-model to raise and lower that model by moving it along the spindle of angular cross-section, a rocking lever which is pivoted to a sleeve loosely encircling the aforesaid intermediate spindle, is engaged with the aforesaid cam and is in operative connection with the moon-model to raise and lower that model by moving it along the spindle of angular cross-section and to be moved by the same spindle around the axis of the intermediate spindle, an earth-model, an inclined spindle about which that model is rotatable and which is fixed to the innermost tubular spindle aforesaid and lies aslant in relation thereto, a driving wheel below the aforesaid base and driving pinion secured to the earth-model, an auxiliary duplex pulley carried on a support borne by the innermost tubular spindle, an endless band encircling the driving pinion and one member of-the auxiliary duplex pulley, and an endless band both sides of which pass through the bore of the innermost tubular spindle and one end of which embraces the other member of the axuiliary duplex pulley .while the other end encircles the said drivmg wheel.

4.111 a tellurion, the combination of a base,a vertlcal shaft'fixed 1n and extendlng upwardly from the base, a plurality of stanection between a pulley on one of the said concentric spindles and a correspondingstationary wheel in the aforesaid plurality, an earth-model borne on the top of the innermost spindle, a cam'fixed aslant upon the intermediate spindle, a moon-model bored axially, a spindlewhich at its upper end engages the moon-model and prevents relative rotation between it and the said spindle and at its lower end is operatively connected to the outermost of the three concentric tubular spindles aforesaid to turn therewith but not relatively thereto, an operative connection between the aforesaid cam and the moon-model to raise and lower that model by moving it along the spindle of angular cross-section, a rocking lever which is pivoted to asleeve loosely encircling the aforesaid intermediate spindle, is engaged with the aforesaid cam and is in operative connection with the moonuhodel to raise and lower that model by moving it along the spindle of angular cross-section and to be moved by the saine spindle around the axis of the intermediate spindle, an earth-model, an inclined spindle about which that model is rotatable and which is fixed to the innermost tubular spindle aforesaid and lies aslant in relation thereto, a driving wheel.

constituted by a'series of radial arms having swan-necked ends and situated below the aforesaid base, a drivingp1n1on secured to 'the earth-model, an auxiliary duplex pulley carried on a support borne by the innermost tubular spindle, an endless band encircling the driving pinion and one member of the 7 tical shaft and co-axial therewith, a horizontal bar pivoted to the aforesaid vertical shaft and movable about it inthe horizontal plane, three concentric spindles, innermost intermediate and outermost, together constituting a triple spindle and borne on one arm of the horizontal bar perpendicularly thereto and each rotatable independently of its companion, about their common axis three pulleys one secured to each of said three spindles, three endless bands constituting each an operative connection between a pulley on one of the said concentric spindles and a corresponding stationary wheel in the aforesaid plurality, an earth-model borne on the top of the innermost spindle, a cam fixed aslant upon the intermediate spindle, a moon-model bored axially, a spin dle which at its upper end engages the moonmodel and prevents relative rotation between it and the said spindle and at its lower end is operatively connected to the outermost of the three concentric spindles aforesaid to turn therewith but not relatively thereto, an operative connection between the aforesaid cam and the moonmodel to raise and lower that model by mov ing it along the spindle of angular crosssection, a rocking lever which is pivoted to a sleeve loosely encircling the aforesaid intermediate spindle, is engaged with the aforesaid'cam and is in operative connection with the moon-model to raise and lower that model by moving it along the spindle of angular cross-section and to be moved by the same spindle around the axis of the intermediate spindle, a sun-model, a rotatable sun-driving sleeve and pinion engaged with one nother and encircling the aforesaid vertical shaft, a stationary sun-driving wheel secured on the said vertical shaft, a vertical sp ndle fixed to and rising from the aforesaid horizontal bar, a pair of connected auX- iliary pulleys on that vertical spindle and flexible means operatively connecting the sun-driving pinion with the stationary sundriving wheel by way of the said connected auxiliary pulleys.

6. In a tellurion, the combination of a base, a vertical shaft fixed in and extending upwardly from the base, a plurality of stationary wheels secured on the aforesaid vertical shaft and co-aXial therewith, a horizontal bar pivoted to the aforesaid vertical shaft and movable about it in the horizontal plane, three concentric tubular spindles, innermost intermediate and outermost, together constituting a triple spindle and borne on one arm of the horizontal bar pen pendicularly thereto and each rotatable independently of its companion about their common axis, three pulleys one secured to each of said three spindles, three endless bands constituting each an operative connection between a pulley on one of the said concentric spindles and a corresponding sta tionary wheel in the aforesaid plurality, an

earth-model borne on the top of the inner-.

rotation between it and the said spindle and at its lower end is operatively connected to the outermost of the three concentric tubular spindles aforesaid to turn therewith but not relatively thereto, an operative connection between aforesaid cam and the moon-model to raise and low that model by moving it along the spindle of angular cross-section, a rocking lever which is pivoted to a sleeve loosely encircling the at resaid intermediate spindle, is engaged with the aforesaid cam and is in operative connection with the moon-model spindle of angular cross-section to be moved by that spindle around the axis of the innermost spindle, a shadowcap engaging one side of the moon-model, a rotatable driving-sleeve encircling the lower portion of the spindle by which as aforesaid the angular bore of the moon-model is engagec, two pulleys one fixed to the said dri ing-sleeve the other fixed to the horizontal bar aforesaid, and an endl ss band encirclingthese two pulleys, a rising and falling splii l connection actuated by the rocking lever and also by the driving-sleeve and connecting said drivingsleeve and shadow-cap to turn the latter about the spindle ofangular cross-section and to raise and lower the shadow-cap and moon-model, an earth-model, an inclined spindle about which that model is rotatable and which is fixed to the innermost tubul spindle f aforesaid and lies aslant in relation thereto. adriving wheel below the aforesaid base, a driving pinion secured to the earthmodel, an auxiliary duplex pulley carried on a support borne by the innermost tubular spindle, an endless band encircling the driving pinion and one member of the auxiliary duplex pulley, an endless hand both sides of which pass through the bore of the innermost tubular spindle and one end of which embraces the other member of the iliary duplex pulley while the other end encircles the ,aid driving wheel, a sun nodcl, a rotatable sun-driving sleeve and pin 1 engaged with one another and encircling the aforesaid vertical shaft, a stationary sundriving wheel secured on the said vertical shaft, a vertical spindle fixed to and rising from the aforesaid horizontal bar, a pair of connected auxiliary pulleys on that vertical spindle, and flexible drivin means operatively connecting the sun-driving pinion with the stationary sun-driving wieel by way of the said connected auxiliary pulleys.

7. In a tellurion, the combination of a base, a vertical shaft fixed in and extending upwardly from the base, a plurality of stationary wheels secured on the aforesaid vertical shaft and coaxial therewith, a horizontal bar pivoted. to the aforesaid vertical shaft and movable about it in the horizontal plane, three concentric spindles, innermost intermediate and outermost, together constituting a triple spindle and borne on one arm. of the horizontal bar perpendicularly thereto and each rotatable independentlyof its companion about their common axis, three pulleys one secured to each of said three-spindles, hree endless bands constituting each an operative connection between a pulley on one of the said concentric spindles and a corresponding stationary wheel in the aforesaid plurality, an earth-model borne on the top of the innermost spindle, a cam fixed aslant upon the intermediate spindle, a il'lO-Oll-IllOdGl bored axially, a spindle which its upper end engages the moon model and prevents relative rotation be tween it and the said spindle and at its lower end is operatively connected to the outermost of the three concentric spindles aforesaid to turn. therewith but not relatively thereto, an operative connection between the aforesaid cam and the moon-model to raise and lower that model by moving it along the spindle of angular cross-section, a rocking lever which is pivoted to a sleeve loosely encircling the aforesaid intermediate spindle, is engaged with the aforesaid cam and is in operative connection with the moon-model to raise and lower that model by moving it along the spindle of angular cross-section and to be moved by the same spindle around the axis of the intermediate spindle, bandtightening devices for the endless bands aforesaid and screw expanding-devices for the circumferences of driving wheels ongaged by said bands.

8. In a tellurion, the combination of a base, a vertical shaft fixed in and extending upwardly from the base, a plurality of stationary wheels secured on the aforesaid vertical shaft and coaxial therewith, a horizontal bar pivoted to the aforesaid vertical. shaft and movable about it in the horizontal plane, three concentric spindles, innermost intermediate and outermost, together constituting a triple spindle and borne on one arm of the horizontal bar perpendicularly thereto and each rotatable independently of its companion about their common axis, three pulleys one secured to each of said three spindles, three endless bands constituting each an operative connection between a pulley on one of the said concentric spindles, and a corresponding stationary wheel in the aforesaid plurality, an earth model borne on the top of the innermost spindle, a cam fixed aslant upon the intermediate spindle, a moon-model bored axially, a spindle which at its upper end engages the moon-model and prevents relative rotation between it and the said spindle and at, its lower end is operatively connected to the outermost of'the three concentric spindles aforesaid to turn therewith but not relatively thereto, an operative connection between the aforesaid cam and the moon-model to r; ise and lower that model by moving it along the spindle of angular cross-section, a rocking lever which is pivoted to a sleeve loosely encircling the aforesaid intermediate spindle, is engaged with the aforesaid cam and is in operative connection with the moonmodel spindle of angular cross-section tobe moved. by that spindle around the axis of the innermost spindle, a shadow-cap engaging one side of the moon-model, a rotatable driving-sleeve encircling the lower portion of the spindle by which as aforesaid the angular bore'of the moon-model is: engaged, two pulleys one fixed to the said driving-- sleeve the other fixed to the horizontal bar aforesaid, and an endless band encircling these two pulleys, a rising and falling splined connection actuated by the rocking lever and also by the driving-sleeve an connecting said driving-sleeve and shadowcap to turn the latter about the spindle of angular crosssection and to raise and lower the shadow-cap and moon-model bandtightening devices for the endless bands aforesaid and screw expanding-devices for the circumferences of driving wheels engaged by said bands.

9. In a tellurion, the combination of a base, a vertical shaft fixed in and extending upwardly from the base, a plurality of stationary wheels secured on the aforesaid vertical shaft and co-axial therewith, a horizontal bar pivoted to the aforesaid vertical shaft and movable about it in the horizontal plane, three concentric tubular spindles, innermost intermediate and outermost, together constituting a triple spindle and borne on one arm of the horizontal bar perpendicularly thereto and each rotatable independently of its companion about their common axis, three pulleys one secured to each of said. three spindles, three endless bands constitutin each an operative connection. between a pulley on one ofthe said concentric spindles and a corresponding stationary wheel in the aforesaid plurality, an eartlrmodel borne on the top of the innermost spindle, a cam fixed aslant upon the intermediate spindle, a moon-model bored axially, a spindle which at its upper end engages the moon-model and prevents relative rotation between it and the said spindle and at its lower end is operatively connected to the outermost of the three concentric tubular spindles aforesaid to turn therewith but not relatively thereto, an operative connection between the aforesaid cam and the moonmodel to raise and lower that model by moving it along the spindle of angular cross-section, a rocking lever which is pivoted to'a sleeve-loosely encircling the aforesaid intermediate'spindle, is engaged with the aforesaid cam and is in operative connection with the moon-model to raise and lower that model by moving it along the spindle of angular cross-section and to be moved by the same spindle around the axis of the intermediate spindle, an earth-model, an inclined spindle about which that model is rotatable and which is fixed to the innermost tubular spindle aforesaid and lies aslant in relation thereto, a

driving wheel below the aforesaid base, a-

driving pinion secured to the earth-model, an auxiliary duplex pulley carried on a support borne by the innermost tubular spindle, an endless band encircling the driving pinion and one member of the auxiliary duplex pulley, an endless band both sides of which pass through the bore of the innermost tubular spindle and one end of which embraces the other member of the auxiliary duplex pulley while the other end encircles the said driving wheel, band-tightening devices for the endless bands aforesaid and screw-expanding-devices for the circumferences of driving wheels engaged by said bands.

10. In a tellurion, the combination of a base, a vertical shaft fixed in and extending upwardly from the base, a plurality of stationary wheels secured on the aforesaid vertical shaft and co-axial therewith, a horizontal bar pivoted to the aforesaid vertical shaft and movable about it in the horizontal plane, three concentric tubular spindles, innermost intermediate and outermost, together constituting a triple spindle and borne on one arm of the horizontal bar perpendicularly thereto and each rotatable independently of its companion about their common axis, three pulleys one secured to each of said three spindles, three endless bands constituting each an operative connection between a pulley on one of the said concentric spindles and a corresponding stationary wheel in the aforesaid plurality, an earthmodel borne on the top of the innermost spindle, a cam fixed aslant upon the intermediate spindle, a moon-model bored axially, a spindle which at its upper end engages the moon-model and prevents relative rotation between it and the said spindle and at its lower end is operatively connected to the outermost of the three concentric tubular spindles aforesaid to turn therewith but not relatively thereto, an operative connection between the aforesaid cam and the moonmodel to raise and lower that modelby moving it along the spindle of angular crosssection, a rocking lever which is pivoted to a sleeve loosely encircling the aforesaid in termediate spindle, is engaged with the aforesaid cam and is in operative connection with the moon-model to raise and lower that model by moving it along the spindle of angular cross-section and to be moved by the same spindle around the axis of the intermediate spindle, an earth-model, an inclined spindle about which that model is rotatable and which is fixed to the innermost tubular spindle aforesaid and lies aslant in relation thereto, a driving wheel constituted by a series of radial arms having swannecked ends and situated below the aforesaid base, a driving pinion secured to the earth-model, an auxiliary duplex pulley carried on a support borne by the innermost tubular spindle, an endless band encircling the driving pinion and one member of the auxiliary duplex pulley, an endless band both sides of which pass through the bore of the innermost tubular spindle and one end of which embraces the other member of the auxiliary duplex pulley while the other end encircles the said driving wheel, band-tightening devices for the endless bands aforesaid and screw expanding-devices for the circumferences of driving wheelsengaged by said bands. Y

11. In a tellurion, the combination of a base, a vertical shaft fixed in and extending upwardly from the base, a plurality of stationary wheels secured on the aforesaid vertical shaft and co-axial therewith, a horizontal bar pivoted to the aforesaid vertical shaft and movable about it in the horizontal plane, three concentric spindles, innermost intermediate and outermost, together constituting a triple spindle and borne on one arm of the horizontal bar perpendicularly thereto and each rotatable independently of its companion about their common axis, three pullevs one secured to each of said three spindles, three endless bands constituting each an operative connection between a pulley on one of tie said concentric spindles and a corresponding stationary wheel in the aforesaid plurality, an earth-model borne on the top of the innermost spindle, a cam fixed aslant upon the intermediate spindle, a moon-model bored axially, a spindle which at its upper end engages the moon-model and prevents relative rotation between it and the said spindle and at its lower end is operatively connected to the outermost of the three concentric spindles aforesaid to turn therewith but not relatively thereto, an operative connection between the aforesaid cam and the moon-model to raise and lower that model by moving it along the spindle of angular cross-section, a rocking lever which is pivoted to a sleeve loosely encircling the aforesaid intermediate spindle, is engaged with the aforesaid cam and is in operative connection with the moon-model to raise and lower that model by moving it along the spindle of angular cross-section and to be moved by the same spindle around the axis of the intermediate spindle, a sun-model, a rotatablesun-driving sleeve and pinion engaged with one another and encircling the :driving Wheel secured on the said vertical jshaft, a vertical spindle fixed to and rising from the aforesaid horizontal bar, a pair of connected auxiliary pulleys on that vertical spindle, flexible driving means operatively connecting the sun-driving pinion with the stationary,sun-driving wheel by way of the said connected auxiliary pulleys, band-tightening devices for the endless bands aforesaid and screw expanding-devices for the circumferences of driving wheels engaged by said bands.

12. In a tellurion, the combination of a base, a vertical shaft fixed in and extending upwardly fromthe base, a plurality of stationaryvwheels secured on the aforesaid vertical shaft and'co-axial therewith, a hori- :zontal bar pivoted to the aforesaid vertical shaft and movable about it in the horizontal plane, three concentric tubular spindles, innermost intermediate and outermost,-t0- gether constituting a triple spindle and borne onwone arm of the horizontal bar perp'endicularly thereto and each rotatable independently of its companion about their common axis, three pulleys one secured to each of said three spindles, three endless bands constituting each an operative connection between a pulley on one of the said concentric spindles and a corresponding stationary wheelin the aforesaid plurality, an earth-model borne on the top of the innermost spindle, a cam fixed aslant upon the intermediate spindle, a moon-model bored axially, a spindle which at its upper end engages the moon-model and prevents rela-' tive rotation between it and the said spindle and at its lower end is operatively connected to the outermost of the three concentric tubular spindles aforesaid to turn therewith but not relatively thereto, an operative connection between the aforesaid cam and the moon-model to raise and lower that model by moving it along the spindle of angular crossesection, a rocking lever which is pivoted to a sleeve loosely encircling the aforesaid intermediate spindlefis engaged with the aforesaid cam and isinoperative connection with the moon-model spindle of angular cross-section to be'moved by that spindle around the axis of the innermost-spindle, a shadow-cap engaging one side of the moon-model, a rotatable drivinga sleeve encircling the lower portion. of the spindle by which as aforesaid the angular bore of the moon-model'is engaged, two pulleysone. fixed to the said driving-sleeve the other "fixed to the horizontal. bar aforesaid,

and an endless band encircling these two i-pulleys, a rising'and falling splined connection actuated 'by'the rocking leverand also by the driving-sleeve and connecting said .drivingesleeve and ishadoW-tcap :to the latter about the spindle of angular crosssection and to raise and lower the shadowcap and moonmodel, an earth-model, an inclined spindle aboutivhich that model is rotatable and which is'fix'ed to the innermost,

tubular spindle aforesaid and lies aslant'in relation thereto, a driving wheel below the aforesaid base, a driving pinion secured to the earth-model, an auxi iary duplex pulley carried on a support borne by the innermost tubular spindle, an endless band encircling the driving pinion and one member ofthe auxiliary duplex 'pulley, an endless band both sides of which pass through the bore-10f the innermost tubular spindle and T one end of which cnibracesthc other member of the auxiliary duplex pulley while the other end encircles the sa1d driving wheel,

a sun-model, rotatable sun-driving sleeve and pini'onengaged with one another and GIlGlIGlll'lg the aforesaid ve'rtlcal-shaft, a

"endless bands aforesaid and screw expandin -devices for thecircumferences of driving wheels "engaged by said bands.

13. In a tellurion, the combination of a base, a vertical shaft fixed in and extend ing upwardy from the base, a plurality of stationary wheels secured on the aforesaid vertical shaft and coaxial therewith, horizontal bar pivoted to the aforesaid vertical shaft and movable about it=i1rthe horizontal plane, three concentric spindles, innermost intermediate and outermost, together 7 constituting a triple'spindle and borne on one arm of th'erhorizontal bar. perpendicularly thereto and each rotatable independ-fently of its companion about their'cominon axis, three pulleys one secured to each of i said three spindles,-three endless bands constituting' each an operative "connection be-. tween a pulley-on one ofv the said concentric spindles and a corresponding stationary wheel in the aforesaid plurality, an earthmodel, borne on the-top of the innermost spindle, a cam fixed aslant upon the inter- Inediate'spin'dle, a moon-model bored axially, a spindle which at its upper endengages theunoon-niodel and prevents "relative'rotation between it and the said spindle andat its lower end-is operatively connected to the outermost 'of'the three concentric spindles aforesaid to-turn therewith but not relatively thereto, an operative connection between the aforesaid-cam and the moodumodel to and-lowertliat model by moving it along the spindle of angular cross-section, a rocking-lever which is pivoted to a sleeve loosely encircling the afore said intermediate spindle, is engaged with the aforesaid cam and is in operative connection with the moon-model to raise and lower that model by moving it along the spindle of angular cross-section and to be moved by the same spindle around the axis of the intermediate spindle and screw expanding-devices for th circumferences of driving-wheels engaged by said bands.

14. In a tellurion, the combination of a base, a vertical shaft fixed in and extending upwardly from the base, a plurality of stationary wheels secured on the aforesaid. vertical shaft and co-axial therewith, a horizontal bar pivoted to the aforesaid vertical shaft and movable about it in the horizontal plane, three concentric spindles, innermost intermediate and outermost, together constituting a triple spindle and borne on one arm of the horizontal bar perpendicu larly thereto and each rotatable independently of its companion about their common axis, three pulleys one secured to each of said three spindles, three endless bands constituting each an operative connection between a pulley on one of the said concentric spindles, and a corresponding stationary wheel in the aforesaid plurality, an earthmodel borne 011 the top of the innermost spindle, a cam fixed aslant upon the intermediate spindle, a moon-model bored axially, a spindle which at its upper end engages the moon-model and prevents relative rotation between it and the said spindle and at its lower end is operztively connected to the outermost of the three concentric spindles, aforesaid to turn therewith but not relatively thereto, an operative connection between the aforesaid cam and the moon model to raise and lower that model by moving it along the spindle of angular crosssection, a rocking lever which is pivoted to a sleeve loosely encircling the aforesaid intermediate spindle, is engaged with the aforesaid cam, and is in operative connection with the moon-model spindle of angular cross-section to be moved by that spindle around the axis of the innermost spindle, a shadow-cap engaging one side of the moon model, a rotatable driving-sleeve encircling the lower portion of the spindle by which as aforesaid the angular bore of the moonmodel is engaged, two pulleys one fixed to the said driving-sleeve the other fixed to the horizontal bar aforesaid, and an endless band encircling these two pulleys, a rising and falling splined connection actuated by the rocking lever and also by the drivingsleeve and connecting said driving-sleeve and shadow-cap to turn the latter about the spindle of angular 'QlOSS section and to raise and lower the shadowcap and moonmodel and screw-expanding-devices for the circumferences of driving-wheels engaged by said bands.

15. In a tellurion, the combination of a base, a vertical shaft xed in and extending upwardly from the base, a plurality of stationary wheels secured on the aforesaid vertical shaft and co-axial therewith, a hori zontal bar pivoted to the aforesaid vertical shaft and movable about it in the horizontal plane, three concentric tubular spindles, innermost intermediate and outermost, to gether constituting a triple spindle and borne 011 one arm of the horizontal bar perpendicularly thereto and each rotatable independently of its companion about their common axis, three pulleys one secured to each of said three spindles, three endless bands constituting each an operative connection between a pulley on one of the said concentric spindles and a corresponding stationary wheel in the aforesaid plurality, an earth-model borne on the top of the innermost spindle, a cam fixed aslant upon the intermediate spindle, a moon-model bored axially, a spindle which at its upper end on gages the moon-model and prevents relative rotation between it and the said spindle and at its lower end is operatively connected to the outermost of the three concentric tubular spindles aforesaid to turn therewith but not relatively thereto, an operative connection between the aforesaid cam and the moonmodel to raise and lower that model by moving it along the spindle of angular crosssection, a rocking lever which is pivoted to a sleeve loosely encircling the aforesaid inter mediate spindle, is engaged with the aforesaid cam and is in operative connection with the moon-model to raise and lower that model by moving it along the spindle of angular cross-section. and to be moved by the same spindle around the axis of the inter mediate spindle, an earth-model, an inclined spindle about which that model is rotatable and which is fixed to the innermost tubular spindle aforesaid and lies aslant in relation thereto, a driving wheel below the aforesaid base, a driving pinion secured to the earth-model, an auxiliary duplex pulley carried on a support borne by the innermost tubular spindle, an endless band encircling the driving pinion and one member of the auxiliary duplex pulley, an endless hand both sides of which pass through the bore of the innermost tubular spindle and one end of which embraces the other member of the auxiliary duplex pulley while the other end encircles the said driving wheel and screw-expanding-devices for the circumferences of driving-wheels engaged by said bands.

16, In a tellurion, the combination of a b'ase,-a vertical shaft fixed in and extending upwardly fromthe base, a plurality of stacommon axis, three pulleys one secured'to each of said three spindles, three endless bands constituting each an operative connec- 7 tion between a pulley on one of the said concentric spindles and a corresponding stationary wheel in the aforesaid plurality, an earth-model borneon the top of the innermost spindle, a cam fixed aslant upon the intermediate spindle, a moon-model bored axially, a Spindle which at its upper end engages the moon-model and prevents relative rotation between it and the said spindle and at its lower end 1s operatively connected to the outermost of the three'concentric tubu-- lar spindles aforesaid to turn therewith but not relatively thereto, an operative connection between the aforesaid cam and the moon-model to raise and lower that model by moving it along the spindle of angular cross-section, a rocking lever which is pivoted to a sleeve loosely encirclin the aforesaid intermediate spindle, is engaged with the aforesaid cam and is in operative connection with the moon-model to raise and lower that model, by moving it along the spindle of angular cross-section and to be moved by the same spindle around the axis of the intermediate spindle, an earth-model, an inclined spindle about which'that model is rotatableand which is fixed to the innermost tubular spindle aforesaid and lies aslant in relation thereto, a driving wheel constituted by a series'of radial arms having swannecked ends and situated below the aforesaid base, a driving pinion secured to the earth-model, an auxiliary duplex pulley carried on a support borne by the innermost tubular spindle, an endless band encircling the driving pinion and one member of the auxiliary duplex pulley, an endless band both sides of which pas through the bore of the innermost tubular spindle and one end of whichembraces the other member of the auxiliary duplex pulley while the other end encircles the said driving wheel, and screw expanding-devices for the circumferences of driving-wheels engaged'by said bands;

17. In a tellurion, the combination of a base, a vertical shaft. fixed in and extending upwardly from the base, a plurality of stationary wheels secured on the aforesaid vertical shaft and co-axial therewith, a hori- 'zontal bar pivoted to the aforesaid-vertical shaft and movable about it in the horizontal plane, three concentrlc-spindles, innermost intermediateand outermost, together constituting a triple spindle and borne on one arm of the horizontal bar perpendicularly thereto and each rotatable independently of its companion about their common axis, three I pulleys one secured to each of saidthree spindles, three endless band constituting each an operative connection between a pulley on one of the said concentric spindles and a corresponding stationary wheel in the aforesaid plurality, an earth-model borne on the top of the innermost spindle, a cam fixed aslant upon the intermediate spindle, a moon-model bored axially, a spindle which at its upper end engages the moon-model and prevents relative rotation between it and the said spindle and at its lower end is operatively connected to the outermost of cling the aforesaid intermediatespindle, is

engaged with the aforesaid cam and is -in operative connection with the moon-model to raise and lower that model by moving it along the spindle of angular cross-section and to be moved by the same spindle around the axis of the intermediate spindle,-a sunmodel, a rotatable sun-driving sleeve and pinion engaged with oneanother and encircling the aforesaid vertical shaft, a stationaryv sun-driving wheel secured on the said vertical shaft, a vertical spindle fixed to and rising from the aforesaid horizontal bar, a pair of connected auxiliary pulleys on that vertical spindle and flexibledriving means operatively connecting the sun dri ving pinion with the stationary sun-driving wheel by way of the'said connected auxiliary pulleys, and screw expanding-devices for the circumferences of driving-wheels engaged by'said bands. 1

18. In a tellurion, the combination of a base,- a vertical shaft fixed in and extending upwardly from the base, a plurality-of stationary wheels secured on the aforesaid 'ver tical shaft and co-axial therewith,"a hori zontal bar pivoted to the'aforesaid vertical shaft and movable about it in the horizontal plane, three concentric tubular spindles, innermost intermediate and outermost, to- 'gether' constituting a triple spindle and borne on one arm of the horizontal bar perpendicularly thereto and each rotatable independently of its companion about their common axis, three pulleys one secured to each of-saidthree spindles; three-endless bands constituting each an operative connection between a pulley on one of the said con centric spindles and a corresponding stationary wheel in the aforesaid plurality, an earth-model borne on the top of the innermost spindle, a' cam fixed aslant upon the intermediate spindle, a moon-model bored axially, a spindle which at its upper end engages the moon-model and prevents relative rotation between it and the said spindle and at its lower end is operatively connected to the outermost of the three concen 'tric tubular spindles aforesaid to turn therewith but not relatively thereto, an operative connection between the aforesaid cam and the moon-model to raise and lower that model by moving it along the spindle of angular cross-section, a rocking lever which is pivoted to a sleeve loosely encircling the aforesaid intermediate spindle, is engaged with the aforesaid cam and is in operative connection with the moon-model spindle of angular cross-section to be moved by that spindle around the axis of the innermost spindle, a shadow-cap engaging one side of the moonmodel, a rotatable driving-sleeve encircling the lower portion of the spindle by which as aforesaid the angular bore of the moon-model is engaged, two pulleys one fixed to the said driving sleeve the other fixed to the horizontal bar aforesaid, and an endless band encircling these two pulleys, a rising and falling splined connection aotuated by the rocking lever and also by the driving sleeve and connecting said drivingsleeve and shadow-cap to turn the latter about the spindle of angular cross-section and to raise and lower the shadow-cap and moon-model, an earth-model, an inclined spindle about which that model is rotatable and which is fixed to the innermost tubular spindle aforesaid andlies aslant in relation thereto, a driving wheel below the aforesaid base, a driving pinion secured to the earth-model, an auxiliary duplex pulley carried on a support borne by the innermost tubular spindle, an endless band oncircling the driving pinion and one member of the auxiliary duplex pulley, anendless hand both sides of which pass through the bore of the innermost tubular spindle and one end of which embraces the other member of the auxiliary duplex pulley while the other end encircles the said driving wheel, a sun-model, a rotatable sundriving sleeve and pinion engaged with one another and encircling the aforesaid vertical shaft, a stationary sun-driving wheel secured on the said vertical shaft, a. vertical spindle fixed to and rising from the aforesaid horizontal bar, a pair of connected auxiliary pulley on that vertical spindle, and flexible driving means operatively connecting the sun-driving pinion with the stationary sun-driving wheel by way of the said connected auxiliary pulleys, and screwexpandingdevices for the circumferences of driving-wheels engaged by said bands.

19. In a tellurion, the combination of a base, a vertical shaft fixed in and extending upwardly from the base, a plurality of stationary wheels secured on the aforesaidL vertical shaft and co-axial therewith, a horizontal bar pivoted to the aforesaid vertical shaft and movable about it in the horizontal plane,

concentric spindles constituting a compound spindle and borne on one arm of the horizontal bar perpendicularly thereto and each rotatable independently of its companion about their common axis, pulleys one secured to each of said spindles, endless bands constituting each an operative connection between a pulley on one of the said concentric spindles and a corresponding stationary wheel in the aforesaid plurality, an earthmodel borne on the top of the innermost spindle, a moon-model bored axially, a spindle which at its upper end engages the moonmodel and prevents relative rotation between it and the said spindle and at its lower end is operatively connected to one of the concentric spindles appropriated thereto to turn with the spindle but not relatively thereto, and means to raise and lower the moon on its spindle.

20. In a tellurion, the combination of a base, a vertical shaft fixed in and extending upwardly from the base, a plurality of stationary wheels secured on the aforesaid vertical shaft and co-axial therewith, a horizontal bar pivoted to the aforesaid vertical shaft and movable about it in the horizontal plane, concentric spindles constituting a compound spindle and borne on one arm of the horizontal bar perpendicularly thereto and each rotatable independently of its companion about their common axis, pulleys one secured to each of said spindles, endless bands constituting each an operative connection between a pulley on one of the said concentric spindles and a corresponding stationary wheel in the aforesaid plurality, an earthmodel borne on the top of the innermost spindle, a moon-model bored axially, a spindle which at its upper end engages the moonmodel and prevents relative rotation between it and the said spindle and at its lower end is operatively connected to one of the concentric spindles appropriated thereto to turn with the spindle but not relatively thereto, means to raise and lower the moon on its spindle, hand-tightening devices for the endless bands aforesaid and screw expanding-devices for the circumferences of wheels engaged by said bands.

21. In a tellurion, the combination of a base, a vertical shaft fixed in and extending upwardly from the base, a plurality of stazontal bar perpendicularly thereto and each rotatable independently of its companion about their common aX-is,-pulleys one secured to each of said spindles, endless bands constituting each an operative connection between a pulley on one of the said concentric spindles and a corresponding stationary wheel in the aforesaid plurality, an earthmodel borne on the top of the innermost spindle, a moon-model bored axially, a spin dle which at its upper end engages the moonmodel and prevents relative rotation between it and the said spindle and at its lower .end is operatively connected to one of the concentric spindles appropriated theretoto turn with the spindle but not relatively thereto, means to raise and lower the Inoonon its spindle and screw expanding-devices forthe circumferences of wheels engaged by said bands. I

In testimony whereof I have signecl my name to this specification.

WILLIAM WILSON.

Copies 10f this patent may be obtained for five cents each, by addressingithe Commissioner of Patents,

Washington, D. G. 

